The Introduction of Emerging Currencies into a Portfolio: towards a More Complete Diversification Model

نویسندگان

  • Sophie Brana
  • Stéphanie Prat
چکیده

We draw on portfolio theory and international diversification in order to analyse strategies allowing to reduce emerging economies’ exposure to exchange-rate risk. We show in particular that it may be efficient for an investor, in terms of maximising the return-to-risk ratio, to build up a portfolio of emerging-country assets denominated in local currency unhedged against currency risk compared with a strategy including emerging-country securities denominated in foreign currencies. This strategy would lead to a reduction in the original sin (i.e. the inability of emerging economies to borrow in local currency), and de facto to a reduction in currency mismatches in the balance sheets of emerging economies. Résumé Nous nous appuyons sur la théorie des portefeuilles et de la diversification internationale afin d’analyser les stratégies permettant de réduire l’exposition des économies émergentes au risque de change. Nous montrons en particulier qu’il peut être efficient pour un investisseur, en termes de maximisation du couple rendement/risque, de constituer un portefeuille d’actifs émergents libellés en monnaie nationale non couvert contre le risque de change par rapport à une stratégie qui inclurait dans le portefeuille des titres émergents libellés en devises. Cette stratégie conduirait à une diminution du péché originel (i.e. l’incapacité des économies émergentes à emprunter en monnaie nationale), et de fait à une réduction des déséquilibres en devises dans les bilans des économies émergentes. JEL Classification : G11 ; E44 ; F34. Mots-clés : International portfolio diversification, Original Sin, Emerging countries, Downside risk..

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تاریخ انتشار 2016